@book{latexpratique,
    author={Christian Rolland},
    title ={\LaTeX{} par la pratique},
    year={1999},
    publisher={O'Reilly}
}
 
@book{texbook,
    author={Donald E. Knuth},
    title={The \TeX book},
    year={1990},
    publisher={Addison-Wesley}
}